Promotion of the invasiveness of hepatoma cells by TAECs after insufficient RFA. (A) HepG2-GFP invasion in vitro in response to conditioned media from TAECs was assayed after the control treatment or insufficient RFA. Data are the representative results of three independent experiments with five samples per group. (B) IL-6, IL-8, MCP-1 and GRO-α concentrations in conditioned medium were detected using the ELISA assay. Columns: means from three individual experiments with five samples per group; bars: SE; *: P <0.05; **: P <0.01; ***: P <0.001.